The GRAW engine continues to improve along with gameplay elements.
http://www.ghostrecon.net/forums/index.php?showtopic=40850&hl=
It looks like Xbox World 360 (UK) got the exclusives to the first published GRAW 2 info, in issue 47.
In addition to the screenshots that appeared on the web over the past two days, they have a couple that haven't been seen online yet, and a lot of text in their 7 page preview. Most of the text is waffle though - so here's a run down on the juicy bits...
Cross Com v2.0 - Full Screen recon and control of drones
Dynamic Shadows i.e contrast varies depending on factors such as sun position and buildings
Dynamic day and night cycles
Dynamic Weather, i.e can change mid mission, and combined with the dynamic day/night cycles leads to many different environmental possibilities
Object Translucency. You know how Splinter Cell had those cool drapes blowing in the breeze? Now with GRAW2 apparently the translucency of the object will determine if you can see through it at all, or just a little, or maybe enough to see a shadow beyond...
Plot has Mexican Rebels fighting Loyalists - and the Ghost fight along side the Loyalists - even ordering them about via the Cross Com.
Diverse Settings - urban and rural
MULE - Unmanned Ground Drone(Google it) at your disposal
New Class - Medic
Photo realism thanks to Ambient Occlusion and High Dynamic Range Lighting
http://www.ghostrecon.net/forums/index.php?showtopic=40850&hl=